Mast



Nov. 25, 1947. H. COHEN 2,431,610

l MAS-T Filed April 10, 1945 @fn/eases -i BY l Patented Nov. 25,y 1947ammo;

UNITED STATES PATENT OFFICE lMAST `Harold Cohen, Elizabeth, N. J.

Application April 10, 1945, Serial No. 587 ,499

(Cl. 18S-25) 3 Claims.

This invention relates` to va structure in the form of a mast, pole ortower.

An object of the present invention is the provision of a structure ofthe indicated character embodying improvements in construction wherebythe structure will havethenecessary strength and rigidity in order thatit Amay be raised or: erected from a horizontal to a vertical position.

A further object is the provision of a structure of the charactermentioned which is not only strong and rigid, but which is light inweight and `oifers a minimum resistance to the wind considering the sizeof the structure.

The invention also resides in the simplicity of the construction of amast or tower, the economy with which it may be produced and the generalbenefits derived therefrom.

The nature of the invention and its distinguishin-g features andadvantages will appear when the following spec'ication is read inconjunction with the accompanying drawing, in which- Fig. 1 is afragmentary side elevational View of a mast or tower embodying thefeatures of the invention, portions being shown in section.

Fig. 2 is an enlarged horizontal sectional view taken on the line 2 2 ofFig. 1.

Figs. 3, 4 and 5 are detail vertical sectional views taken on therespective lines 3 3, 4--4 and 55.

Referring now to Fig. 1 of the drawing, it will be apparent that themast or tower, generally stated, consists of similar sections Ill joinedin end-to-end relation. Each of the sections I0 consists of leg membersor uprights II, spanners or transverse members I2 secured to saidmembers II near the ends, respectively, of the section, and spanners orcross-ties I3 secured to said members II intermediate the ends, toretain said members II in spaced relation to each other.

The leg members or uprights II may be of wood or metal, and arepreferably in the form of metal tubes of suitable length, as shown inthe present instance.

The spanners I2 are circular or annular, or in other words, the spannersI2 consist of rings of similar shape in cross-section, and of equaldiameter in the present case. Each spanner I2 is of hollow construction,and is round in crosssection. The Spanner has alined -holes I4 arrangedin pairs, and the pairs are spaced equally with respect to each other.There are twelve pairs of holes I4 in each spanner I2 in the presentinstance. Obviously, more or less pairs may be provided according to thenumber of leg or up-A V cros'swise with respect to each other. fsp'annerI2 also has connected therewith a plul II has a tubular splice I9 weldedthereto.

right members `II desired for strength and rigidity. Cross braces I5 arewelded at their ends to thespanner I2, said braces i5 are disposeddiametrically with respect to Spanner and Each rality of U-bolts I6.Suitable washers I'I are arranged on the ends of each bolt I6 betweenthe Spanner and the nuts I8.

The intermediate spanners I3 are similar to 'the spanners I2, exceptthat the spanners I3 do lnot carry anyU-bolts. Features of the spanneis:I3 similar -to those of spanner's I2 are given c'orrespondingrefer-ence numerals.

The lower end of each leg member or uprigllt e splice surrounds saidmember II for one-half the length of the splice leaving the other halfto provide a socket for the upper end of a second leg member II, so thatthe leg members may be joined in pairs.

The parts of a section or unit ID are assembled as follows. The requirednumber of leg members or uprights II are severally extended throughpairs of the holes I4 in a plurality of the spanners I3, which aredisposed intermediate the ends of the members II, and welded thereto inspaced relation. The members II are also extended in the holes I4 of twospanners I2 which are disposed near the opposite ends, respectively, ofthe section or unit I0 providing an upper and a lower Spanner I2 foreach section I. The spanners are welded to the members Il, the lowerspanner I2 of the section IB abutting the splioes I9. Braces 20 in theform of rods or lengths of cable, as shown in the present instance, areconnected with the U bolts I6 on the spanners i2 so as to be disposeddiagonally. The nuts I8 may be vadjusted to draw the U-bolts to tightenthe braces 20.

The completed sections or units I0 are rigidly joined to each otherend-to-end or in superimposed relation and the members I I of thesections It! in longitudinal alinement with each other as follows. Theupper ends of the members II of one section Il] are projected into thesplices IS of a second section or unit. Suitable fastening elements,such as the bolts 2l, are employed in conjunction with the opposingspanners I2 of two sections I0 to securely draw them toward each other.The bolts 2| extend loosely through said spanners I2 which have holestherein for that purpose. Each bolt 2l has an adjustable nut 22 andwashers 23 .on the bolt conform to and bear QH the Circular surface ofthe related Spanner I2.

3 Thus, the sections I0 are rigidly joined, although capable of beingseparated should the occasion arise to dismantle the structure.

The sections or units I0 may be readily as' sembled on the groundleaving the completed mast or tower prone or horizontal. The mast ortower is strong and of unusual rigidity. This enables it to be raisedfrom a horizontal position to a vertical position of use. The mast ortower constructed in the manner described and illustrated offers aminimum of resistance to the Wind and a maximum of stability in use.

The mast or tower may be constructed without the diagonal braces 20, ifdesired, especially if it is not built to any comparatively greatheight.

' It is to be understood that in accordance with the invention, a mastor tower may be triangular, square or any other shape in horizontalcrosssection. Therefore, the spanners may be triangular, square or evenstraight. Also, the mast or tower in general design may be tapered orpyramidal. However, a construction as shown may be fabricated at lesscost than one which is tapered.

I claim:

1. In a tower or mast, pairs of leg members, cross-tie elements, the legmembers of each pair extending through alined holes in said elementsrespectively, in end-to-end abutting relation to each other and rigidlysecured to said elements, a splice member telescoping the end portionsof each pair of leg members between said elements, said splice memberbeing in non-threaded engagement with said leg members and abutting saidcross-tie elements', and securing means to secure said elements, legmembers and splice members in rigidly assembled relationship.

2. In a tower mast, as set forth in claim 1, wherein said securing meansextends through said cross-tie elements.

3. In a tower or mast, pairs of leg members, annular one-piece spanners,the leg members of each pair extending through alined holes in saidspanners respectively, and rigidly secured thereto, a splice membertelescoping the end portions of each pair of leg members between saidspanners, said splice member being in non-threaded engagement with saidleg members and abutting f' said spanners, and securing means extendingthrough said spanners to secure said spanners, leg members and splicemembers in rigidly assembled relationship.

` HAROLD COHEN.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 349,049 Lippincott Sept. 14, 1886811,435 Perdue Jan. 30, 1906 868,942 Ried Oct. 22, 1907 1,955,074 KnuppApr. 17, 1934 2,157,500 Sarseld et al. May 9, 1939 471,373 Beard et alMar. 22, 1892 2,194,810 Reiner Mar. 26, 1940

